#include <stdio.h>
int main()
{
	int size;
	int arr[] = { 7,8,9,11,12};
	size = sizeof(arr)/sizeof(arr[0]);
	int i, j;
	int a = 0;
	for (i = 1; 1; i++)
	{
		for (j = 0; j < size; j++)
		{
			a = 0;
			if (arr[j] == i)
			{
				a = 1;
				break;
			}
		}
		if (a == 0)
		{
			printf("%d", i);
			break;
	    }
	}
	return 0;
}
